Description

Subscriber SQL Injection in UDesign Core <= 4.15.0 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.5",
  "pubDate": "2026-10-06T09:17:54.610Z",
  "pubdate": "2026-10-06T09:17:54.610Z",
  "executiveSummary": "A critical SQL injection vulnerability exists in UDesign Core versions 4.15.0 and earlier, allowing authenticated users with the Subscriber role to execute arbitrary SQL commands against the underlying database.\nThis vulnerability is classified as an Improper Neutralization of Special Elements used in an SQL Command (CWE-89).\nThe flaw stems from insufficient input sanitization and improper use of database queries within the plugin's core architecture.\nSuccessful exploitation allows a malicious Subscriber to bypass standard application security controls, resulting in unauthorized data exposure, modification, or complete database compromise.\nThe attack is remotely exploitable and does not require elevated administrative privileges, making it a significant risk to the integrity and confidentiality of the affected WordPress environment.\nAttackers can leverage this vulnerability to extract sensitive information, such as user credentials, configuration settings, or proprietary data stored within the database.\nThe impact is critical, as it could facilitate further system compromise, including potential remote code execution depending on the database configuration and environment.",
  "technicalDetails": "The UDesign Core plugin contains an SQL injection vulnerability that manifests when the application processes user-supplied data through improperly secured database interaction methods.\nThe vulnerability resides in the core handling of subscriber-level requests, where input parameters are not adequately validated or parameterized before being concatenated into SQL queries.\nBecause the application fails to utilize prepared statements or appropriate escaping mechanisms, a user authenticated with the Subscriber role can inject malicious SQL syntax into the vulnerable parameters.\nThe attack flow begins when an attacker sends a crafted request containing specially formatted SQL payloads via HTTP POST or GET methods. The application receives this input and processes it through a vulnerable function, which then interacts with the database engine.\nBy manipulating the SQL syntax, the attacker can force the database to execute arbitrary queries. This includes using UNION-based injection to retrieve data from other tables or error-based techniques to gain insight into the database structure.\nIn scenarios where the database user possesses sufficient permissions, an attacker might also perform blind SQL injection to exfiltrate data bit-by-bit, or potentially perform data manipulation if the vulnerable queries are executed within a write-enabled context.\nThe vulnerability affects all versions of UDesign Core up to and including 4.15.0. Authentication is required to reach the vulnerable code path, but the level of privilege required is minimal, restricted only to the Subscriber role.\nPost-exploitation, an attacker can gain full read access to the database, potentially dumping entire user tables, application settings, and sensitive metadata. If the application environment allows for stacked queries, an attacker might attempt to perform administrative actions, such as creating new privileged accounts or modifying existing user credentials, which could lead to full administrative takeover of the WordPress instance.\nThe lack of strict input validation at the application layer ensures that even complex payloads can bypass basic security filters, making this a high-impact vulnerability that requires immediate attention for systems relying on the UDesign Core plugin."
}